Question about GMC Cars & Trucks
The battery is constantly draining ... i have already replaced the alternator thinking that may be the problem but it keeps draining...i also have replaced the battery
Check all the little lights, in the trunk, interior of the car, even under the hood sometimes, to see if one is stuck on. Find it's switch.
Posted on Nov 26, 2013
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Posted on Jan 02, 2017
SOURCE: alternator light on
The alternator is not producing any power . If it were the engine would run without the battery. Check the wiring on the alternator. It must ave an exciter wire to make it work.
Posted on Oct 07, 2008
have you checked your drive belt and the tension pully ? it sounds like the belt is'nt turning the alternator fast enough to supply the battery
Posted on Apr 13, 2009
pull key out of ignition and wait 2 minutes for the can system to go to sleep(instrument cluster is off) and all doors are shut-no consumers on should be approx. 50 ma.
Posted on Jun 10, 2009
i suggest you visit another dealership. ask for the "head tech" to look at your vehicle. if something on the car is draining the battery they should be able to pinpoint the problem. if you have any aftermarket electronics installed make sure they know what they are. also on the 430 if the doors are nto completely closed the light at the bottom of the door opening will stay on. you should not need to "turn the car on" every other day. thats nonsense. if you park in a garage try pulling into the garage shut the door and turn out the lights, if something is on in the car you may be able to see it.
Posted on Oct 09, 2009
I am reluctant to pass this along as it is a simple means of troubleshooting. Hopefully you have a battery charger.
this will take several nights to finally isolate the
problem but here goes...
Each night remove a differnet fuse from your fuse box and re-install the fuse the next morning. The day your battery is no longer draining (good start in the morning) you have found the circuit causing the problem.
With 2 batteries and 4 alternators this almost sound like you have shorted wiring some where on the engine. It takes a 35 - 50 amp short to brun up an alternator so the short would have to be on a pretty good sized wire otherwise your car would have caught fire by now from a chassis harness shorting and causing the fire.
Just a thought... hopefully some idiot did not run the positive output lead of the alternator back to the negative battery terminal and no one has caught it. (Just a random thought but it really would take something thqat direct to burn up 4 alternators)
Personally.... Having gone through the expenses in attempted repairs that you have experienced, I would be seeing another shop. I know you said they were the sole agents.... that does not prevent you from visiting a shop that has a good auto electrician. I know it has to be frustrating.
These are the known issues with the A4:
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Posted on Oct 30, 2010
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